P R E L I M I N A R Y
SWITCHING CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL
OPERATING RANGES ............................................................................................... 70
DRAM ............................................................................................................................ 70
DRAM Read Cycle Timing with No-Wait States ............................................................ 71
DRAM Read Cycle Timing with Wait State(s) ................................................................ 71
DRAM Write Cycle Timing with No-Wait States ............................................................. 72
DRAM Write Cycle Timing With Wait State(s) ............................................................... 72
DRAM CAS-before-RAS Cycle Timing .......................................................................... 73
SWITCHING CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL
OPERATING RANGES ............................................................................................... 74
Interrupt Acknowledge Cycle (20 MHz and 25 MHz) ..................................................... 74
SWITCHING CHARACTERISTICS OVER COMMERCIAL OPERATING RANGES ................. 75
Interrupt Acknowledge Cycle (33 MHz and 40 MHz) ..................................................... 75
INTERRUPT ACKNOWLEDGE CYCLE WAVEFORMS ........................................................... 76
SWITCHING CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL
OPERATING RANGES ............................................................................................... 77
Software Halt Cycle (20 MHz and 25 MHz) ................................................................... 77
SWITCHING CHARACTERISTICS OVER COMMERCIAL OPERATING RANGES ................. 77
Software Halt Cycle (33 MHz and 40 MHz) ................................................................... 77
SOFTWARE HALT CYCLE WAVEFORMS ............................................................................... 78
SWITCHING CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL
OPERATING RANGES ............................................................................................... 79
Clock (20 MHz and 25 MHz) .......................................................................................... 79
SWITCHING CHARACTERISTICS OVER COMMERCIAL OPERATING RANGES ................. 80
Clock (33 MHz and 40 MHz) .......................................................................................... 80
CLOCK WAVEFORMS .............................................................................................................. 81
Clock Waveforms—Active Mode ................................................................................... 81
Clock Waveforms—Power-Save Mode .......................................................................... 81
SWITCHING CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL
OPERATING RANGES ............................................................................................... 82
Ready and Peripheral (20 MHz and 25 MHz) ................................................................ 82
SWITCHING CHARACTERISTICS OVER COMMERCIAL OPERATING RANGES ................. 82
Ready and Peripheral (33 MHz and 40 MHz) ................................................................ 82
SYNCHRONOUS, ASYNCHRONOUS, AND PERIPHERAL WAVEFORMS ............................ 83
Synchronous Ready Waveforms ................................................................................... 83
Asynchronous Ready Waveforms .................................................................................. 83
Peripheral Waveforms ................................................................................................... 83
SWITCHING CHARACTERISTICS OVER COMMERCIAL AND INDUSTRIAL
OPERATING RANGES ............................................................................................... 84
Reset and Bus Hold (20 MHz and 25 MHz) ................................................................... 84
SWITCHING CHARACTERISTICS OVER COMMERCIAL OPERATING RANGES ................ 84
Reset and Bus Hold (33 MHz and 40 MHz) ................................................................... 84
RESET AND BUS HOLD WAVEFORMS ................................................................................... 85
Reset Waveforms .......................................................................................................... 85
Signals Related to Reset Waveforms ............................................................................ 85
Bus Hold Waveforms—Entering .................................................................................... 86
Bus Hold Waveforms—Leaving ..................................................................................... 86
TQFP PHYSICAL DIMENSIONS ............................................................................................... 87
PQFP PHYSICAL DIMENSIONS .............................................................................................. 88
Am186ED/EDLV Microcontrollers
7
AMD [ AMD ]
